GNS MPDB Crash Barrier Model
In 2021 CDH AG acquired marketing, sales and support rights from GNS mbH to distribute the GNS FEA barrier models in America, Europe and Asia. GNS mbH is a specialist in the development of high-quality FE software solutions (e.g. GNS Animator4) and FE models for vehicle safety analysis. Since more than 20 years, GNS mbH develops highly accurate FE Crash Barrier models in close cooperation with the German and other world-wide automobile industry partners. GNS Crash Barrier FE models are used in the virtual development process for passive vehicle safety engineering calculations.
The Mobile Progressive Deformable Barrier (MPDB) effectively implements the latest developments of LS-DYNA codes and provides users with a stable and targeted analysis.
- According to tests conducted by CATARC, our MPDB barrier model has higher accuracy and more stable performance than similar products.
- Numerous dynamic tests in both the component area and the full barriers allow for consistent and finer calibration. That process goes beyond the regulated barrier control process.
- Our many years of expertise are based on the models successfully developed in specific customer projects to date.
- Simulations are compared with the results of real tests and evaluated. Competent technical support is available at any time.
- The Post-Processor Animator developed by GNS supports the customer in the post-processing of the results.
Specifications
The specifications of the “EuroNCAP Mobile Progressive Deformable Barrier Face Specification” DraftVersion1.2November2018TB022, served as the basis for the development of our Mobile Offset Progressive Deformable Frontal Impact Barrier (MPDB). The MPDB will be used in the 2020 European New Car Assessment Program (EuroNCAP) and, in the future, in the Chinese CNCAP from 2022 in their frontal impact test protocol.
| Element Type | Shell |
| Number of Elements | 2166000 |
| Timestep | 5E-4ms |
| Validation Code | R9.3.0 |
| Regulation Test | EuroNCAP 2020 Frontal Impact Test |
| Regulation Speed | Vehicle and trolley have both a target speed of 50kph |
Validation
The test results on four different impact conditions–the car fitted with a barrier hits a quarter-wall, a vertical, a rounded and a tubular impactor (specified by EuroNCAP)–form the basis for fine tuning the LS-DYNA model. In addition to comparing the deflection curves (generated from analyses and tests), material tests were performed to create the material models for the distinct parts of the barrier.
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GNS MPDB barrier model